[opensuse] Weird Wifi connection issue on Leap
Hi, On one of my systems running Leap 15.1 I have a weird issue with connecting the system to Wifi networks that I however haven't really been able to pin down precise enough to feel confident in writing a bug report. When trying to connect to a WLAN after system start the connection will fail and a pop-up will appear that asks for the WPA password. Now, no matter how often I enter the correct password in that dialog, connection will still fail. However, if I cancel the connection, wait for a couple of seconds and then press the connect button in the KDE Network Manger, the connection will succeed, using the password that had been stored for that connection all time long. Also, if I remove the configuration for the network and connection from the KDE network manger, the password will be prompted in the network selection screen, not in the pop-up window, and connection will work right away. Weirdly, I only observe this issue on one of my systems. The only thing special about that system is that I messed up when ordering it and it thus is powered by an RTL8821CE-based Wifi adapter which I use via a kernel module ported over from Endless OS [1]. However, as the connection works without issue if "manually" connecting to the network, I fail to see how the driver could be at fault here. Any idea on what I could look at to further pin down the issue? Kind Regards, Matthias -- Dr. Matthias Bach www.marix.org „Der einzige Weg, die Grenzen des Möglichen zu finden, ist ein klein wenig über diese hinaus in das Unmögliche vorzustoßen.“ - Arthur C. Clarke
On 04/28/2020 02:08 PM, Matthias Bach wrote:
Any idea on what I could look at to further pin down the issue?
Other than the journal - no, but I may have an alternative to your connection issue. If this is the wifi connection you use, then why not configure it with YAST to start [x] on boot, and that way your connection will not depend on any network manager? If you move around with this laptop a lot -- this isn't a good solution, but otherwise, it will provide a trouble free connection that is up and running in any desktop you use (or no desktop at all if you boot to a console) -- David C. Rankin, J.D.,P.E.
Slightly different ... but worth thinking about. The last few weeks I've been having problems with my wifi. After install an app on my phone I've seen on the spectrum that the demand for wifi connectivity with everyone home and ether working from home or leaning heavily one things like Netflix because of the lock-down, - they don't turn down the power of their wifi routers - so I can observe AP up to 125 metres away! - there aren't many control channels accessible with this power swamp I can get a signal from my own router, even if i turn it down to just 20% power. What I can't get is a control channel. Too many nearby people competing. I'm going to post an article about this in the condo newsletter asking people to "turn it down". This may not be your problem. But it might be worth considering in the longer term for many of us. Look up the apps in the AppStore for you 'phone and see what there is as far as wifi spectrum analysers go. Some of them might offer diagnostic features that you'll find useful. -- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 2020-05-04 11:58 AM, Anton Aylward wrote:
I can get a signal from my own router, even if i turn it down to just 20% power. What I can't get is a control channel. Too many nearby people competing.
What "control channels" are you referring to? WiFi doesn't have any. Perhaps you're thinking of the cell phone network, which does. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 04/05/2020 12:12, James Knott wrote:
On 2020-05-04 11:58 AM, Anton Aylward wrote:
I can get a signal from my own router, even if i turn it down to just 20% power. What I can't get is a control channel. Too many nearby people competing.
What "control channels" are you referring to? WiFi doesn't have any. Perhaps you're thinking of the cell phone network, which does.
Odd. My Wifi setup page has settings for - MAC address (If I want to override/spoof) - power output (I set to 75% at present) - 802.11 band (set to 2.4GHz) - bandwidth (set to 20MHz) - control channel (Auto, 1,2,3,4,5,6,7,8,9,10,11) (set to 7 at this moment) The wifi network scanner on my phone show the signal strengths and control channels in use by the AP in range. Again the application refers to those wifi APs as having 'control channels'. https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer Articles I read on the 'net, similarly refer to setting up APs and have graphics of the setup screens with the GUI control labelled, as is mine 'control channel'. OBTW: I can run this same app in my tablet that has wifi but isn't phone/LTE enabled. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 05/04/2020 11:24 PM, Anton Aylward wrote:
- control channel (Auto, 1,2,3,4,5,6,7,8,9,10,11) (set to 7 at this moment)
The wifi network scanner on my phone show the signal strengths and control channels in use by the AP in range. Again the application refers to those wifi APs as having 'control channels'. https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer
Articles I read on the 'net, similarly refer to setting up APs and have graphics of the setup screens with the GUI control labelled, as is mine 'control channel'.
I'm by far no expert here, but I don't think "control channel" is the proper term. From my memory I recall them just being channels where the frequency was segmented which allowed multiple access points to co-exist in somewhat a more friendly manner. All the AP docs and setups I've seen discuss this normally operating in Auto mode but giving you manual control to select a distinct channel if needed. It has been a long while since I've stumbled though the docs (I think it was last with a Linksys wrt54g that I saw the description) Lord knows how much from a labeling standpoint is lost-in-translation now days.... -- David C. Rankin, J.D.,P.E. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On Tue, 5 May 2020 02:57:39 -0500 "David C. Rankin" <drankinatty@suddenlinkmail.com> wrote:
On 05/04/2020 11:24 PM, Anton Aylward wrote:
- control channel (Auto, 1,2,3,4,5,6,7,8,9,10,11) (set to 7 at this moment)
The wifi network scanner on my phone show the signal strengths and control channels in use by the AP in range. Again the application refers to those wifi APs as having 'control channels'. https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer
Articles I read on the 'net, similarly refer to setting up APs and have graphics of the setup screens with the GUI control labelled, as is mine 'control channel'.
I'm by far no expert here, but I don't think "control channel" is the proper term. From my memory I recall them just being channels where the frequency was segmented which allowed multiple access points to co-exist in somewhat a more friendly manner. All the AP docs and setups I've seen discuss this normally operating in Auto mode but giving you manual control to select a distinct channel if needed. It has been a long while since I've stumbled though the docs (I think it was last with a Linksys wrt54g that I saw the description)
Lord knows how much from a labeling standpoint is lost-in-translation now days....
I'm no expert either, but I've never heard the phrase 'control channel' in connection with wi-fi. There is an oddity with wi-fi in that the spectrum/energy of a signal is spread over more than one channel, so although you can 'select' a single channel, you actually occupy bandwidth on both sides of that channel, so there are really only two or three channels that are sensibly usable at 2.4 GHz. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 05/05/2020 03:57, David C. Rankin wrote:
On 05/04/2020 11:24 PM, Anton Aylward wrote:
- control channel (Auto, 1,2,3,4,5,6,7,8,9,10,11) (set to 7 at this moment)
The wifi network scanner on my phone show the signal strengths and control channels in use by the AP in range. Again the application refers to those wifi APs as having 'control channels'. https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer
Articles I read on the 'net, similarly refer to setting up APs and have graphics of the setup screens with the GUI control labelled, as is mine 'control channel'.
I'm by far no expert here, but I don't think "control channel" is the proper term. From my memory I recall them just being channels where the frequency was segmented which allowed multiple access points to co-exist in somewhat a more friendly manner. All the AP docs and setups I've seen discuss this normally operating in Auto mode but giving you manual control to select a distinct channel if needed. It has been a long while since I've stumbled though the docs (I think it was last with a Linksys wrt54g that I saw the description)
Lord knows how much from a labeling standpoint is lost-in-translation now days....
I don't know about 'lost in translation, but the online manual https://www.worldline.ca/application/files/7215/6459/9754/Wifi-Settings-Cabl... for my wifi router shows on page 4 a screenshot with the use of that term. I can go though the web for many other illustrative uses of the term or label. Yes some vendors call it just 'channel'. -- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 2020-05-05 04:56 PM, Anton Aylward wrote:
I don't know about 'lost in translation, but the online manual https://www.worldline.ca/application/files/7215/6459/9754/Wifi-Settings-Cabl... for my wifi router shows on page 4 a screenshot with the use of that term.
That shows terms I've never heard of WRT WiFi, such as "Sideband for control channel", Radar check and more. That radar stuff makes me wonder if that device is intended for France, where the restrictions on WiFi are much greater than here. There are some portions of the 5 GHz band where WiFi has to protect radar and other services.
I can go though the web for many other illustrative uses of the term or label.
Yes some vendors call it just 'channel'. Yep, only every other brand I've ever worked with.
-- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 05/05/2020 17:09, James Knott wrote:
On 2020-05-05 04:56 PM, Anton Aylward wrote:
I don't know about 'lost in translation, but the online manual https://www.worldline.ca/application/files/7215/6459/9754/Wifi-Settings-Cabl...
for my wifi router shows on page 4 a screenshot with the use of that term.
That shows terms I've never heard of WRT WiFi, such as "Sideband for control channel", Radar check and more. That radar stuff makes me wonder if that device is intended for France, where the restrictions on WiFi are much greater than here. There are some portions of the 5 GHz band where WiFi has to protect radar and other services.
I'll say yes to that since, it appears, that web page is documenting the European model, it has some features mine, a north American one, doesn't. Sorry, that as the first DCW775 manual I came across. Chop off the bottom part of the illustration.
I can go though the web for many other illustrative uses of the term or label.
-- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 05/05/2020 06.24, Anton Aylward wrote:
On 04/05/2020 12:12, James Knott wrote:
On 2020-05-04 11:58 AM, Anton Aylward wrote:
I can get a signal from my own router, even if i turn it down to just 20% power. What I can't get is a control channel. Too many nearby people competing.
What "control channels" are you referring to? WiFi doesn't have any. Perhaps you're thinking of the cell phone network, which does.
Odd. My Wifi setup page has settings for - MAC address (If I want to override/spoof) - power output (I set to 75% at present) - 802.11 band (set to 2.4GHz) - bandwidth (set to 20MHz) - control channel (Auto, 1,2,3,4,5,6,7,8,9,10,11) (set to 7 at this moment)
Must be a wording error or translation issue. They just channels. Try changing to auto. Or check with the phone app one that is less used. The best thing, if your hardware allows it, is changing band. -- Cheers / Saludos, Carlos E. R. (from 15.1 x86_64 at Telcontar)
On 2020-05-05 12:24 AM, Anton Aylward wrote: >> What "control channels" are you referring to? WiFi doesn't have any. Perhaps >> you're thinking of the cell phone network, which does. > Odd. > My Wifi setup page has settings for > - MAC address (If I want to override/spoof) > - power output (I set to 75% at present) > - 802.11 band (set to 2.4GHz) > - bandwidth (set to 20MHz) > - control channel > (Auto, 1,2,3,4,5,6,7,8,9,10,11) > (set to 7 at this moment) > > The wifi network scanner on my phone show the signal strengths and control > channels in use by the AP in range. Again the application refers to those wifi > APs as having 'control channels'. > https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer > > Articles I read on the 'net, similarly refer to setting up APs and have graphics > of the setup screens with the GUI control labelled, as is mine 'control channel'. Well, I have never heard of a control channel on Wifi. However, on 2.4 GHz, the channel you choose is actually 1 of 4 or 5, depending on which WiFi version. I also have that app and just checked. I didn't see any mention of Wifo control channel. BTW, O'Reilly has several Wifi books by Matthew Gast. I have and have read all of them. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
05.05.2020 14:04, James Knott пишет:
On 2020-05-05 12:24 AM, Anton Aylward wrote:
What "control channels" are you referring to? WiFi doesn't have any. Perhaps you're thinking of the cell phone network, which does. Odd. My Wifi setup page has settings for - MAC address (If I want to override/spoof) - power output (I set to 75% at present) - 802.11 band (set to 2.4GHz) - bandwidth (set to 20MHz) - control channel (Auto, 1,2,3,4,5,6,7,8,9,10,11) (set to 7 at this moment)
The wifi network scanner on my phone show the signal strengths and control channels in use by the AP in range. Again the application refers to those wifi APs as having 'control channels'. https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer
Articles I read on the 'net, similarly refer to setting up APs and have graphics of the setup screens with the GUI control labelled, as is mine 'control channel'.
Well, I have never heard of a control channel on Wifi. However, on 2.4 GHz, the channel you choose is actually 1 of 4 or 5, depending on which WiFi version. I also have that app and just checked. I didn't see any mention of Wifo control channel.
Control channel is base channel when bundling multiple wifi channels to get 40/80/...MHz bandwidth.
BTW, O'Reilly has several Wifi books by Matthew Gast. I have and have read all of them.
Oh! -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
Am Dienstag, 28. April 2020, 21:08:11 CEST schrieb Matthias Bach:
Hi,
On one of my systems running Leap 15.1 I have a weird issue with connecting the system to Wifi networks that I however haven't really been able to pin down precise enough to feel confident in writing a bug report.
You are not alone. There was thread in the German counterpart of this list last year that spans three months: https://lists.opensuse.org/opensuse-de/2019-08/msg00173.html https://lists.opensuse.org/opensuse-de/2019-09/msg00000.html https://lists.opensuse.org/opensuse-de/2019-10/msg00000.html
When trying to connect to a WLAN after system start the connection will fail and a pop-up will appear that asks for the WPA password. Now, no matter how often I enter the correct password in that dialog, connection will still fail. However, if I cancel the connection, wait for a couple of seconds and then press the connect button in the KDE Network Manger, the connection will succeed, using the password that had been stored for that connection all time long. [...] Any idea on what I could look at to further pin down the issue?
Some of the participants in the thread mentioned above had similar problems. However, since these problems are intermittant for some, it was hard to prove that a proposed solution actually worked. One person solved the problem by turning off "MAC address randomization", another one by cleaning up the KWallet. HTH Jan -- The first myth of management is that it exists. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
Hi, Am Mittwoch, 29. April 2020, 13:25:56 CEST schrieb Jan Ritzerfeld:
Am Dienstag, 28. April 2020, 21:08:11 CEST schrieb Matthias Bach:
Hi,
On one of my systems running Leap 15.1 I have a weird issue with connecting the system to Wifi networks that I however haven't really been able to pin down precise enough to feel confident in writing a bug report.
You are not alone. There was thread in the German counterpart of this list last year that spans three months: https://lists.opensuse.org/opensuse-de/2019-08/msg00173.html https://lists.opensuse.org/opensuse-de/2019-09/msg00000.html https://lists.opensuse.org/opensuse-de/2019-10/msg00000.html
[…]
Some of the participants in the thread mentioned above had similar problems. However, since these problems are intermittant for some, it was hard to prove that a proposed solution actually worked. One person solved the problem by turning off "MAC address randomization", another one by cleaning up the KWallet.
Thanks for these pointers. They were actually pretty insightful. And a shame I didn't come up with the idea of searching the Germany mailing list myself. It seems the problem is completely unrelated to KWallet as it for me happens even for freshly created users. Turning off "MAC address randomization" was an excellent hint. It seems following the instructions at https://blog.muench-johannes.de/networkmanager-disable-mac-randomization-314 solved the problem for me. Obviously, I'll only be sure after some extended usage but rebooting so far was a pretty 100% trigger for the issue and now I was able to do multiple without triggering the issue. Obviously this comes at some privacy cost, but as all usage of the affected laptop is either at home or in a public function this luckily is not too significant in this case. Kind Regards, Matthias -- Dr. Matthias Bach www.marix.org „Der einzige Weg, die Grenzen des Möglichen zu finden, ist ein klein wenig über diese hinaus in das Unmögliche vorzustoßen.“ - Arthur C. Clarke
Am Sonntag, 3. Mai 2020, 21:22:14 CEST schrieb Matthias Bach:
Hi,
Hi!
Am Mittwoch, 29. April 2020, 13:25:56 CEST schrieb Jan Ritzerfeld: [...]
Some of the participants in the thread mentioned above had similar problems. However, since these problems are intermittant for some, it was hard to prove that a proposed solution actually worked. One person solved the problem by turning off "MAC address randomization", another one by cleaning up the KWallet.
Thanks for these pointers. They were actually pretty insightful. And a shame I didn't come up with the idea of searching the Germany mailing list myself.
Don't be too hard on yourself, it's a high-volume list.
It seems the problem is completely unrelated to KWallet as it for me happens even for freshly created users.
Okay, that would have been the nasty race condition problem. :)
Turning off "MAC address randomization" was an excellent hint. It seems following the instructions at https://blog.muench-johannes.de/networkmanager-disable-mac-randomization-31 4 solved the problem for me.
Cool! It was a shame last year that I totally forgot that my old hardware had exactly that problem. However, that's why I remembered it this time.
Obviously, I'll only be sure after some extended usage but rebooting so far was a pretty 100% trigger for the issue and now I was able to do multiple without triggering the issue. Obviously this comes at some privacy cost, but as all usage of the affected laptop is either at home or in a public function this luckily is not too significant in this case.
Perfect.
Kind Regards, Matthias
Gruß Jan -- The ten most feared words in the English language are: "Hello, I'm from the government and I'm here to help...." -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
participants (8)
-
Andrei Borzenkov -
Anton Aylward -
Carlos E. R. -
Dave Howorth -
David C. Rankin -
James Knott -
Jan Ritzerfeld -
Matthias Bach